Results 51 to 60 of about 461,416 (208)
Smooth locus of twisted affine Schubert varieties and twisted affine Demazure modules
Forum of Mathematics, SigmaLet ${\mathscr {G}} $ be a special parahoric group scheme of twisted type over the ring of formal power series over $\mathbb {C}$ , excluding the absolutely special case of $A^{(2)}_{2\ell }$ .
Marc Besson, Jiuzu Hong
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Horospherical Schubert varieties
The algebraic group structure of stabilizers of points in Schubert varieties is investigated. We show that these stabilizers are always strongly solvable algebraic groups and discuss their connectedness properties.
Mahir Bilen Can +2 more
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Deep Underground Science and Engineering, EarlyView.This research proposes an interpretable hybrid stacking ensemble framework, optimized by the Sparrow Search Algorithm, to enhance hard rock pillar stability prediction. By integrating six machine learning models—k‐nearest neighbors, support vector machines, random forests, Gradient Boosting Decision Tree, eXtreme Gradient Boosting, and Light Gradient ...
Ning Wang +3 more
wiley +1 more source
Gorenstein toric Schubert varieties in Grassmannians [PDF]
A partial flag variety is a smooth projective homogeneous variety admitting an action of a maximal torus $T$. Schubert varieties are $T$-invariant subvarieties of the partial flag varieties.
Lee, Eunjeong, Kim, Shin-young
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Schubert varieties in twisted affine flag varieties and local models [PDF]
, 2013 Our concern in this paper is the dimension and inclusion relations of Schubert varieties in twisted partial affine flag varieties.
Richarz, Timo
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Environmental Policy and Governance, EarlyView.ABSTRACT Local environmental politics in China is often said to be dominated by state‐controlled modes of multi‐level governance. However, top‐down governance is embedded within and transformed by local politics, adding complexity to governance practices and environmental outcomes.
Minsi Liu, Kevin Lo
wiley +1 more source
Marine Anoxia and Ocean Acidification During the End‐Permian Extinction
Geophysical Monograph Series, Page 325-340., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Ying Cui +4 more
wiley +1 more source
Nearly Toric Schubert Varieties of Type A [PDF]
A notion of a nearly toric variety is introduced. The examples of nearly toric varieties in the context of Schubert varieties are discussed. In particular, combinatorial characterizations of the smooth and singular nearly toric Schubert varieties are ...
Morera, Nestor Diaz, Can, Mahir Bilen
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K-Orbit closures and Hessenberg varieties
Forum of Mathematics, SigmaThis article explores the relationship between Hessenberg varieties associated with semisimple operators with two eigenvalues and orbit closures of a spherical subgroup of the general linear group.
Mahir Bilen Can +3 more
doaj +1 more source
Epileptic Disorders, EarlyView.Abstract Objective To develop and evaluate a simple‐to‐use checklist to support physicians with the timely diagnosis of Lennox–Gastaut syndrome (LGS). Methods A panel of 10 pediatric and adult epileptologists used the International League Against Epilepsy (ILAE) criteria for LGS classification and definition to develop seven questions for the checklist,
Nicola Specchio +9 more
wiley +1 more source